Title of article :
Density and viscosity of magnesium sulphate in formamide + ethylene glycol mixed solvents
Author/Authors :
Kumar، N. نويسنده , , Ali، A. نويسنده , , NAIN، A.K. نويسنده , , IBRAHIM، M. نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Abstract :
Densities (r) and viscosities (h) of different strengths of magnesium sulphate (MgSO4) in varying proportions of formamide (FA) + ethylene glycol as mixed solvents were measured at room temperature. The experimental values of r and h were used to calculate the values of the apparent molar volume, (phi v), partial molar volume, (phi v°) at infinite dilution, A- and B-coefficients of the Jones–Dole equation and free energies of activation of viscous flow, ( ) 0* 1delta mu and ( ), 0* 2 delta mu per mole of solvent and solute respectively. The behaviour of these parameters suggests strong ion–solvent interactions in these systems and also that MgSO4 acts as structure-maker in FA + ethylene glycol mixed solvents.
Keywords :
activation energy of viscous flow , formamide–ethylene glycol mixture , Magnesium sulphate
Journal title :
Journal of Chemical Sciences
Journal title :
Journal of Chemical Sciences